--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/s4-annex.sh	Wed Jun 03 21:32:10 2020 +0900
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+if [ -z "$S4MASTERDB" -o ! -s "$S4MASTERDB" ]; then
+  return
+fi
+if [ "$db" -ef "$S4MASTERDB" ]; then
+  return		# Points to the same file
+fi
+
+skey="skey-`basename $mydir`"
+syncflag=$dbdir/usersynced
+userupdateflag=`dirname $S4MASTERDB`/`basename $userupdateflag`
+test ! -e "$userupdateflag"		&& return
+test "$syncflag" -nt "$userupdateflag"	&& return
+    
+#  for sub.sq3
+# 
+#  main: user: 'taro', 'hanako', 'shige'
+#  sub:  user: 'taro', 'hanako', 'shige'
+#  sub2: user_s: ('taro', 't'), ('hanako', 'h'), ('shige', 's')
+#  then update
+# 
+
+judgeequal() {
+  read num
+  test $num -eq 0 && touch $syncflag
+  return $num
+}
+
+## sqlite3 -cmd '.timer 1' -cmd '.echo 1' $db <<EOF
+err "Starting account synchronization"
+err "db=$db mas=$S4MASTERDB sess=$sessdb"
+sqlite3 -bail -cmd 'PRAGMA FOREIGN_KEYS=on' $db <<EOF | judgeequal
+ATTACH DATABASE "$S4MASTERDB" AS m;
+CREATE TABLE IF NOT EXISTS user(name, primary key(name));
+BEGIN;
+DElETE FROM main.user WHERE rowid NOT IN (SELECT rowid FROM m.user);
+INSERT INTO main.user(rowid, name)
+       SELECT rowid, name FROM m.user
+       WHERE m.user.rowid NOT IN (SELECT rowid FROM user);
+UPDATE user SET name = (SELECT name FROM m.user WHERE main.user.rowid=m.user.rowid);
+DELETE FROM main.user_s;
+INSERT INTO main.user_s(rowid, name, key, type, val, bin)
+	SELECT rowid,* FROM m.user_s;
+DELETE FROM main.user_m;
+INSERT INTO main.user_m(rowid, name, key, type, val, bin)
+	SELECT rowid,* FROM m.user_m
+	WHERE key NOT LIKE '%cache%';
+END;
+
+/* Compare user tables */
+WITH master AS (
+  SELECT p.rowid,* FROM m.user p
+  	 NATURAL LEFT JOIN m.user_s
+	 NATURAL LEFT JOIN m.user_m
+), annex AS (
+  SELECT p.rowid,* FROM user p
+  	 NATURAL LEFT JOIN user_s
+ 	 NATURAL LEFT JOIN user_m
+), m_a AS (
+  SELECT * FROM master EXCEPT SELECT * FROM annex
+), a_m AS (
+  SELECT * FROM annex EXCEPT SELECT * FROM master
+) SELECT (SELECT count(*) FROM m_a) + (SELECT count(*) FROM a_m);
+
+-- SELECT * FROM annex;
+-- SELECT rowid,* FROM m.user LIMIT 10;
+-- SELECT rowid,* FROM user WHERE rowid NOT IN (SELECT rowid FROM m.user);
+DETACH DATABASE m;
+EOF
+err Done